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## The 5 essential commands
<br>
**Yes**, you only need 5 commands!
<br>
`pull, status, add, commit, push`
<br>
or in other words (remember these!):
```bash
$ git pull
$ git status
$ git add myFile.txt # example
$ git commit -m "myMessage" # example
$ git push
```
## Pull the latest version of an existing repository
First, browse to the cloned directory (`git clone [...]`):
```bash
$ cd practice
```
Then, pull the latest revision:
```bash
$ git pull
# Already up to date
```
Verify its `status` with:
```bash
$ git status
```
## Be safe and create a new branch
(more on branches in a few minutes)
<br><br><br><br><br>
```bash
$ git checkout -b matrix_vect_mult_myName
```
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## Modify a file
Modify and rename `addTwoNumbers.m` in the folder `firstCommit`
<br>
Open the file `addTwoNumbers.m` in the folder `firstCommit` using the `Atom` editor (or any other editor).
<br>
Then, rename the function by adding your name (`addTwoNumbers_myName`)
<br>
Uncomment the line
```Matlab
% c = a + b
```
<br>
Save and rename the file by <font color="red">adding your name</font>
```bash
$ mv firstCommit/addTwoNumbers.m firstCommit/addTwoNumbers_myName.m
```
## Add your file to the stage
First, check the repository status
```bash
$ git status
# uncommitted changes (displayed in red)
```
<div class="fragment">
<br>
Now, add the file (bring it on stage)
```bash
$ git add firstCommit/addTwoNumbers_myName.m
# returns the same as before, generally in green (means staged)
```
<div class="fragment">
<br>
**ADVANCED**: see your changes in the terminal
```bash
$ git diff
```
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## Add a commit message
```bash
$ git commit -m "Uncommented line for adding 2 numbers"
$ git status
```
<br>
You can pull, even at this stage, new possible changes
```bash
$ git pull
```
## Push your file to the repository
```bash
$ git push
```
<div class="fragment">
<br>
**ADVANCED**: see the log of all the commits (and your last one) in the terminal
```bash
$ git log
```
exit by typing `q`
## Do it yourself
* Modify and rename `secondCommit/multiplyTwoNumbers.m`
* Push the file `secondCommit/multiplyTwoNumbers_myName.m`
* Don't forget to add <font color="red">`_myName`</font>
<div class="fragment">
<br>
Commands:
```bash
$ git pull
$ git diff # optional
$ git add secondCommit/multiplyTwoNumbers_myName.m
$ git commit -m "Uncommented line for multiplying 2 numbers"
$ git status
$ git push
$ git log # optional
```